... hardware, Unix reallyshines.Versions of Unix Ther e ar e several versions of Unix. Until a few years ago, there wer e twomain versions: the line of Unix releases that started at AT&T (the latest ... Not only are the applications often free, but some Unix versions arealso free. Linux is a good example. Like the free applications, mostfr ee Unix versions are of excellent quality. They’r e maintained ... users share the same computer. (Don’t bother tryingto use the latest versions of Microsoft Windows on a system that’smor e than a few years old!) If you need a windowing system, Unix lets you...